Japanese blogger Blues is showing off a handsome recreation of Sigma's MMX2 wire-frame virus form, built entirely out of bits of plastic:
When I was younger, I found myself amazed by X2's ability to render the Maverick in 3D. It was a true technical feat back then, all thanks to the CX4 chip. The chip, and its subsequent 3D sfx, were used in Mega Man X3, too.
Check out a few more pics of the model here.